Gas stove



Feb. 9 1926. 1,572,661

w. c. LINDEMANN GAS STOVE Filed Feb. 17, 1925 Patented F oh. 9, 1926. I

UNITED -STATES WALTER C. LINDEMANN, OF MILWAUKEE, WISCONSIN.

GAS STOVE.

Application filed February To all-whom. it may concern:

Be it known that I, WALTER C. Luzon MANN, a citizen of the United States, and a resident of the city of Milwaukee, in the county of Milwaukee, State of Wisconsin, have invented certain new and useful Improvements in Gas Stoves, of which the following is a specification.

The improvements relate to gas stoves, and more particularly to stoves of this character in which the stove top on which the cooking vessels are supported is designed to be wholly or partly closed after the manner of the ordinary solid fuel cook stove. Their objects are, among others, to provide for the proper supply, control and distribution of air to and in the burner box of such stoves, and the escape of such air and the dill till

products of combustion therefrom, and to provide means for the support of vessels of various sizes and character thereon. Other objects and advantages will be apparent to those familiar with devices of the character mentioned.

The improvements are illustrated in the accompanying drawings, which show an embodiment thereof, and in which Figure 1 is a plan of a gas stove;

Figure 2 is a front view thereof; and

Figure 3 is a vertical section on the line 2-2 of Figure '1, looking in the direction indicated by the arrows in that figure, but showing a burner in full elevation.-

The stove top 1 is rovided with cooking holes and has remova le plates 2 fitting and closing the same. The number of such openings maybe as many as desired. In the middle portion of the top is a small opening provided with a cover 8, and this opening is adapted to receive the heat from a small burner (not shown) used for simmering or other like purposes.

The top has a depending flange 11 at its side edges and across its front, and is sup-" ported on a suitable stove frame 19, 19

The top also has annular stepped portions surrounding each cookinghole, as

shown at 13, and prongs or fingers 3 preferably made integral therewith and extending partly across the opening. The lids or plates 2- areof ordinary term and have their flanged edges resting upon the stepped portions surrounding the openings so that the top when the plates are in position permite cooking utensils or other articles to be moved about freely thereon, as on the ordi- 17, 1925. Serial No. 9,749.

nary range. The prongs orfingers 3 serve- 'fuel, but by making them integal or practically integral with the stove top they are made more secure, and avoid'soine of the disadvantages resulting from the employment of loose grates. They also afford a support for vessels smaller than the openin s, andpermit them to be placed closer to t e source of heat, and to a certain extent tend to direct the heat and products of combust-ion towardthe flue 7 at the back of the stove. Their form is such that they do not interfere materially with the directradiation of heat from the heating medium or the direct contact of the flame with the bottom of a vessel, when that is desired.

The burner is located a suitable distance below the top, and directly beneath a cooking hole, as is usual, and this burner is supplied with a suflicient volume of air from below and above to properly support combustion and create an adequate body of heated fluid for cooking purposes by the air inlet at the front of the stove, which is open from a point well below the burner to a I point a little above the same. Any number of burners maybe provided, and in the preferred form one'burne'r is located beneath each front cooking hole. provided, however, in the rear and beneath the back cooking holes if desired, but as such burners add to the cost of the stove,

and unless positioned at or below the level of the front burners will interfere to some ex-' tent with the movement of heated air and combustion products in the direction of the 1 flue, they may be omitted without disadvantage. Moreover, as the burners atthe front usually supply all the needs of ordinary cooking operations calling for direct heat, and the rear cooking holes may be employed at the same time for slower cooking or heating operations, they are dispensable.

as i

Burners may be A bracket l'ldepending from the front flange 11 supports a gas supply pipe 12 which furnishes gas to the burner 15 through a cock 16 and a Bunsen mixer 14: of suitable type. Air for the mixers enters at the open front of the stove, and between and around the miners to a point above the level of the burner top it enters the burner box freely,

The burner is supported by the rod 18 ex;- tending across the stove. n v

Extending across the front of the stove in? that air entering the front of the stove at its level will pass upwardly around its upper edge and between it and the stove top and 10 also serve to downwardly around its lower edge to a level above the base of the burner flames. In this manner the combustion space between the burners and the top is protected against drafts, and at the same time a supply of airis furnished to that space and to the burner flames. It Will thus be seen that the burners are supplied with secondary air from above as wellas from below from the air inlet extending across the front of the stove, and imperfect combustion and the giving off of noxious gases, which would result from an insufficient supply of air above the burners, guarded against. If, however, the pressure of heated air and other gases in the generating zone becomes too great the space above the guard 4 will permit the egress thereof toward the front, and thus maintain the proper balance between the interior of the burner box and the external atmosphere. The maintenance of this balance is also assisted by the perforations 10 at the back of these provisions it has been found that the burners may be burned at fullflame with the top of the stove entirely closed without undesirable results, and perfect combustion maintained. The supplyof secondary air to the burners from below and above and the restricted vents, arranged as above described are important to the attainment of the best results in a-stove of this character, and not only prevent the undesirable results noted, but insure an even and avantageous distribution of the heat throughout the entire cooking area, substantially preventing the formation of eddies in the heated gases and the floating of the flames which would interfere seriousl with combustion and with the efliciency of t 1e stove. The perforations revent the choking of the burners by an obstruction of the flue, and prevent t e interference with combustion and the giving out of obnoxious gases.

The bottom 6 of the burner box is removable, and acts as a dirt'tray, catching the drippings, particles of food and carbon from the portions of the stove above it. -It also serves to limit the volume of airadmitted to the lower part of the burners box. The interior wall 9 extendsupwardly from the bottom to about the levelo-f the burners bottom, and joins an upwardly inclined partition 5 extending to the rear wall of the stove. This construction directs air entering below the burners in an upward and rearward. direction, so that there is a constant drift in the direction of the flue 7 and at the same time a slight concentration of heated air and'combustion products as they approach the rear wall of the stove, tending to direct them upwardly through the rear cooking holes or against the plates when the holes are closed thereby.

The construction and arrangement of the parts is such that the stove as above described can be used with or without an oven, and in either use forms a separate and distinct unit. If an oven is provided it may be located beneath the burner box, or above it and provided with a separate flue or arranged to have its outlet lead into a common flue, according to the long established practice. The operation of the present stove, and of the oven, with either arrangement is not affected by the other.

\Vhat I claim is:

1. In a gas stove, a cooking top provided with cooking holes adapted to be closed, means for closing the same, a bottom member beneath said top and spaced therefrom, a stove frame comprising back and side members forming with said top and bottom a substantially unobstructed burner box and heat generating and distributing chamber extending from front to back of the stove,sa1d box being open at its front, a burner located in the forward part of said space intermediate said top and bottom and in proximity to and below the top of the said open front,-

and having its top in free communication with said space and with the said top vertically and laterally, said open front admitting air directly to the top of and below said burner.

2. In a gas stove a cook top provided with cooking holes adapted to be closed, a stove bottom beneath said top and spaced therefrom, a stove frame comprising back and side members, forming with the said top and bottom, a burner box or heat generating chamber, said box being open at its front, a burner located in said space intermediate said to) and bottom and-in proximity to the said open front, said open front admitting" air above and below the said burner, a

baffle plate or guard extending across the front of the stove within the outer face thereof and between the said burner and the top, said baflie plate admitting air at different levels above the burner.

3. In a gas stove a cooking top provided with cooking holes adapted to be closed, a stove bottom beneath said top and spaced therefrom, a. stove frame comprising back and side members, forming with the said top and bottom, a burner box or heat generat ing chamber, said box being open at its front, a burner located in said space intermediate said top and bottom and in proximity to the said open front and having its top exposed to the outer'atmosphere through said open front, said open front admitting air above and below the said burner, a baffle plate on guard extending across the front of the stove within the outer face thereof and between the said burner and the top, said guard being spaced from the burner and the top and constructedand arranged to permit the passage of air over its upper edge and between it and the top and under its lower edge and between it and the burner.

4. In the construction specified in claim 1 the stove bottom having a vertically rising portion adjacent to the burner and extending upward from a point below the same to approximately the level thereof on the side removed from the open front.

5. In the construction specified in claim 1,

the said bottom having an upwardly inclined portion extending from the forward part thereof to the rear.

ti. In the construction specified in claim 1 the said stove frame having at its rear part a series of openings intermediate the said top and bottom.

7. In the construction sp cified in claim 1 the said stove frame having at its rear part a series of openings intermediate the said top and bottom, and said burner box having a battle extending across its front portion between the burner and the top and admitting air at different levels above the burner.

8. In the construction specified in claim 1, the said stove frame having at its rear part a series of openings intermediate the said top and bottom, said burner box having a restricted opening at its front between the burner and its top.

9. In the construction specified in claim 1, the aid stove frame having at its rear part a series of openings intermediate the said top and bottom, said burner box having a restricted air inletat its front comprising a portion depending from the top and a bafiie extending across its front and having a or tion/in lapped relation to the said depen ing portion.

10. In a gas stove a cooking top provided I with front and back cooking holes adapted l to be closed, a stove bottom beneath said top and spaced therefrom. a stove frame comprising back and side members, forming with the said top and bottom, a burner box or heat generating chamber, said box being open at its front, a burner located in sald space intermediate said top and bottom beneath a front cooking hole and in proximity to the said open front, said chamber havi g an pp t et at its bastard. ack of a back cooking hole, and a portion of said bottom extending from a point below, the top of the burner onan upward incline to the said outlet.

11. In the device specified in claim 10, the said bottom also having an upright portion back of the burner extending from a level below the burner and providing a restricted passage for air upward behind the burner.

12. in the construction specified in claim 1, horizontal finger-like members extending from the said cooking top toward the front and back of the stove over the said openings in a plane below the level of the said openings and forming a depressed grid for the support of a cooking vessel at said lower level, said horizontal members being spaced to provide passages between them for air passing from the front of the stove to the back.

13. In a gas stove the combination of a ,top, means for closing the top, a frame or casing supporting the top, a bottom extending across within said frame and forming with the same and the top a heat generating chamber, a burner located in said chamber intermediate its top and bottom and said chamber having a front opening extending above "and below said burner, means for restricting the passage of air through said front opening above the burner, said chaming therewith a heat generating chamber, a

burner located beneath the top and a baffle plate extending across the front of said chamber and spaced vertically from both the top and the burner.

15. A top having openings therein, means for closing said openings, at bottom spaced therefrom and forming therewith a heat generating chamber, a burner in said heat generating chamber spaced below said top, and means for admitting air to the top of said burner at one level, and beneath the said top at a higher level and for obstructing the en.- trance of air at an intermediate level.

Witnessmy hand this 13th day of February, 1925, at the city of Milwaukee, in the county of Milwaukee, State of Wisconsin.

WALTER C. LINDEMANN. 

